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mercury in fedi-index

The score in every slice, what it is made of, value, local run and history.

fedi-index · General

C 1,270 ±8

Percentile 30 · #206 · provisional

People prefer / Solves tasks

1,275 / —

Human votes vs benchmarks, Elo-eq

Value

—

On your hardware

Closed weights: cloud only.

Score decomposition

C General 1,270 [1,262–1,277] Percentile 30 · #206 · components: 5 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena text/overall 1,282 ±7.02 1,282 ±7 32.5% 2026-10-02 —
LMArena text/hard_prompts 1,284 ±9.41 1,290 ±8 29.9% 2026-10-02 —
LMArena text/instruction_following 1,238 ±13 1,260 ±12 11.9% 2026-10-02 —
LMArena text/longer_query 1,264 ±13 1,274 ±12 5.9% 2026-10-02 —
LMArena text/multi_turn 1,284 ±16 1,293 ±15 5.0% 2026-10-02 —

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

C Coding 1,296 [1,275–1,317] Percentile 32 · #188 · components: 1 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena text/coding 1,323 ±14 1,313 ±13 84.7% 2026-10-02 —

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

C Writing 1,267 [1,245–1,289] Percentile 30 · #187 · components: 1 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena text/longer_query 1,264 ±13 1,274 ±12 90.5% 2026-10-02 —

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

C Language: English 1,276 [1,256–1,295] Percentile 32 · #186 · components: 1 provisional
Source Component Value Elo-eq Weight Measured Variant
LMArena text/english 1,300 ±11 1,282 ±11 91.2% 2026-10-02 —

Weight is the share of the component in the score (the rest is the prior that pulls models with little data towards the population median). Methodology

History

fedi-index by month
The same in a table
Model 2026-10
mercury 1,270 C

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fedi-index: mercury

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